Weinberg like sum rules revisited

Details Weinberg like sum rules revisited Weinberg like sum rules revisited

2007-10-25

arxiv.org/abs/0710.4921v2

PMC Phys.A3:1,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

31 pages, noticed misprints are corrected, references are added, and other minor corrections are made

Scientific paper

10.1186/1754-0410-3-1

The generalized Weinberg sum rules containing the difference of isovector vector and axial-vector spectral functions saturated by both finite and infinite number of narrow resonances are considered. We summarize the status of these sum rules and analyze their overall agreement with phenomenological Lagrangians, low-energy relations, parity doubling, hadron string models, and experimental data.

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